| 1. | See projective plane for the basics of projective geometry in two dimensions.
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| 2. | :: : Try the conic sections paragraph in Projective geometry # description.
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| 3. | This treatment of the Riemann sphere connects most readily to projective geometry.
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| 4. | It is easy to see that this pregeometry is a projective geometry.
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| 5. | Photogrammetry uses methods from many disciplines, including optics and projective geometry.
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| 6. | Using these operations projective geometry can be formulated in terms of geometric algebra.
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| 7. | Another topic that developed from axiomatic studies of projective geometry is finite geometry.
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| 8. | It is sometimes called the " first fundamental theorem of projective geometry ".
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| 9. | The only projective geometry of dimension 0 is a single point.
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| 10. | For the projective theory see Quadric ( projective geometry ).
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